Alfred f



A. F. TOULMIR.

Car-Brake.

No. 26,307. Patented Nov. 29, 1859.

Witnesses;

0 Inventor:

RAILROAD-CAR BRAKE.

Specification of Letters Patent No. 26,307, dated November; 29,

To all whom. 'it may concern: I

Be it known that I, ALFRED F. TOULMIR,

of Ellicotts Mills, in the county of Howard,

inthe State of Maryland, have invented a new and Improved Car-Brake;andflI do hereby declare that the following is a full and exactdescription thereof, reference be ing had to the accompanying drawings,whereof-- v Drawing No. 1 is a view of the bottom of the car (as seenfrom the track) with the car in motion, and the cams free of thebrake-blocks, or in other words the brakes up. Drawing No. 2 is a viewof the bottom of the car (as seen from the track) with the car comingto, or at, a rest, (with cams pressing against the brake blocks) or inother words the brakes down. Drawing No. 3 represents the elevation ofeither end of the car, showing the connection between the engineers,brakemans, or conductors brakecord and the brakes.

For convenience of representation the trucks are not shown, and similarletters and figures will designate like parts in the various. drawings.I

To enable others skilled in the art to make I and use my invention Iwill proceed to describe its construction and operation.

I construct my car in any of the known forms, and apply thereto theusual appendages, such as trucks, brake-blocks, cam rods and cams, andalso an engineer, brakesman, or conductors brake-cord communicating withthe engine and each and every end of every car,(1n the manner to bedescribed) so that when this brake-cord or brake-chain is pulled asimultaneous putting down of the brakes may be effected. Toward thecenter and beneath the bottom of each car I place a swivel bar (b)moving upon a pivot (p). On the oppositesides of the swivel bar, andpressing in opposite directions are springs (S S). To the ends of theswivel (6) bar are fastened chains (0 0 running to the cam-rods (R) Thetongues of the camrods and their cams are perpendicular to the bottom ofthe car when the cars are in motion, either forward or backward, but thecams are pressing against the brakeblooks, and the tongues of the camrods (t t) are inclined toward the swivel bar and the swivel bar (6) atright angles to the sides of the car: (and the springs at rest) when thecars are coming to, or at, a rest or stop. To the cam rods or theirtongues, chains by means of aslotflj(0.-,t) .thelo p .motive is movedforward ,thecouplingb r drawn towardithe ends of thef swivel bar C C arealso attached, runningin th op posite direction to ,the chains; c? c?hese chains O Q are fastened lto lal slide )bhto w; which slide,iat theother endvof it,f;the;c n p-1560 ling pin (a) I is} yqconneotedwandg"passes. through, allowing thejslide and the coupling bar (c-b)tomovenforwardand backward j (0-2)) draws the slidel ;forwardt}.(andithe 'ik I chains C C. are of .suclra lejrigt th when1 drawn towardtheflendsjfofIthe c ,I the tongues of the cam.rodstlareperpendicular tothe bottom of the car I the cams become free from the brake-bloc ,andthe brakes up. A cross piece X is lattached tothe slide (Z), and one end(A) ofthecrosspiecei drawn up an inclined planefl until it is: caught bya shoulder of avtrigger as repre -f sented at (P), andwhenthusjcaughtthe brakes are up untilthe engineerwor con ductor shallchoose to putthem down. gThe train now can moveforward or backward 1without hindrance fromthe brakes; 89 E When the engineer or theiconductorjor I brakesman desires I to put; down. the brakes he pulls thebrakecOrdQ;(E,Qcd) or chain which runs through each (car (after themanner of the v.sconnnon vgconductor sdsignalI8 cord to theengineersbell) andis connected 6 j (at each platform, to.theunderflportion of; the projection of the. roof) to a wheel (withspiral spring. withln to bring; wheel, after being revolved, backto itsjnor mal condition). This wheel [is attached to I the engineersbrake-cord j,(E,fic-d); and

when the cord is pulledpby the engineer brakesman or conductor the wheelrevolves upon a pivot until its revolutionhasbrought a lip 71-? in.contactwith and against the bell crank lever (is), pivoted at (K), andpushed the crank (as shown by dottedqlines on Drawing No 3) untilf the(crank in its movement has pulled the cord. ('I,jd). This h cord (r-d)releases the crosspiece X yfrom the shoulder of the trigger at Theicross II piece being released, the slide (Z), thechain .f C G, and thetongue (at) Qrt cammark (R), are innnediately} drawn.1 toward; theswivel bar (1)) by the force of the springs? (S S) actinmthrough; thechain fe cfliandjfi the tongue 2; t) ofthe camQr d beingthus 1 (b) thespread ofthe cams is thrown against.

the brake blocks,and thuscheckjthe motion of the cars. Thiswheelmovesiniitsy revolution, in a direction exactly contrary to the springwithin it, and by means of this spring returns to its normal conditionso' soon as the pull upon the cord, in the hand of the conductor orengineer, ceases. Thus it will be seen that not a second of time elapsesfrom the moment when the engineer or conductor pulls the brake-cord tothe period when the brakes are simultaneously applied throughout theentire train, and in the second place it will be observed that itrequires no greater power to put down the brakes, simultaneously throughthe entire train, than is now requisite to pull the common signal cordto the engineers bell.

I do not claim as new or novel the releasing of brakes by the forward ortractive movement of the train, but

I claim as my invention 1. The mode described of simultaneouslyapplying, or putting down, brakes by means of the brake-c0rd (E-0-d),the box spring (W) the crank lever (is), the trigger (P),

the cross piece (X), the slide (Z) and the swivel bar (1)) with itssprings S S and S S, arranged as described.

2. I also claim the mode described of instantaneously freeing,relieving, or raising the brakes, and of keeping them free when raised,(until the engineer, conductor or brakesman shall desire to apply them,)by means of the forward or tractive movement of the train in combinationwith the slide (Z) the cross piece (X) and the trigger with its shoulder(P), arranged and operating as described.

ALFRED F. TOULMIR. Witnesses:

R. SNOWDEN AN DREWS,

- 7'. M. WOOLDRIDGE.

